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EM4100 – Protocol description and example

The information below is from Priority 1 Design [1].

EM4100 tags normally operates at 125 KHz, and can use either ASK/PSK modulation with Manchester encoding.

The decoded data is a 64bit bit stream structured as follows:

EM4100 Protocol [2]
EM4100 Protocol

 

Decoding Example

Pulse lengths: